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The effects of cup-like and hill-like parabolic confining potentials on photoionization cross section of a donor in a spherical quantum dot

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  • Moletlanyi Tshipa

    (University of Botswana, Private Bag 0022)

Abstract

A theoretical investigation of the effects of hill-like and cup-like parabolic confining electric potentials on photoionization cross section (PCS) in a spherical quantum dot is presented. The hill-like and the cup-like parabolic potentials are superimposed on an infinite spherical square well (ISSW) potential. As the cup-like parabolic potential intensifies, the peak of the PCS becomes redshifted for the s → p transition, and becomes blueshifted for the p → d, d → f (and so forth) transitions. The hill-like parabolic potential, on the contrary, blueshifts peaks of the PCS for s → p transitions, while it redshifts those of transitions between higher states as it intensifies. Consequently, the two potentials discriminate between transitions involving the ground state and those involving higher states.

Suggested Citation

  • Moletlanyi Tshipa, 2016. "The effects of cup-like and hill-like parabolic confining potentials on photoionization cross section of a donor in a spherical quantum dot," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 89(8), pages 1-5, August.
    • Handle: RePEc:spr:eurphb:v:89:y:2016:i:8:d:10.1140_epjb_e2016-60988-6
    DOI: 10.1140/epjb/e2016-60988-6
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    Cited by:

    1. Moletlanyi Tshipa & Lalit K. Sharma & Surender Pratap, 2021. "Photoionization cross-section in a GaAs spherical quantum shell: the effect of parabolic confining electric potentials," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 94(6), pages 1-8, June.

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    Solid State and Materials;

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